EP0848961B1 - Device intended for use in a therapeutic system for respiratory care with a liquid - Google Patents

Device intended for use in a therapeutic system for respiratory care with a liquid Download PDF

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Publication number
EP0848961B1
EP0848961B1 EP97118282A EP97118282A EP0848961B1 EP 0848961 B1 EP0848961 B1 EP 0848961B1 EP 97118282 A EP97118282 A EP 97118282A EP 97118282 A EP97118282 A EP 97118282A EP 0848961 B1 EP0848961 B1 EP 0848961B1
Authority
EP
European Patent Office
Prior art keywords
treatment liquid
breathing gas
liquid
gas
treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97118282A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0848961A1 (en
Inventor
Kurt Högnelid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Elema AB
Original Assignee
Siemens Elema AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Elema AB filed Critical Siemens Elema AB
Publication of EP0848961A1 publication Critical patent/EP0848961A1/en
Application granted granted Critical
Publication of EP0848961B1 publication Critical patent/EP0848961B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0054—Liquid ventilation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
    • A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/04—Liquids
    • A61M2202/0468—Liquids non-physiological
    • A61M2202/0476—Oxygenated solutions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/913—Breathable liquids

Definitions

  • the present invention relates to a device intended for use in a therapeutic system for respiratory care with a liquid according to the preamble of patent claim 1.
  • Treatment with liquid has proved to be effective, especially for severely ill or injured patients or in cases of pulmonary immaturity.
  • a special treatment liquid usually a perfluorocarbonate.
  • the liquid spreads to the alveoli and keeps them distended.
  • Oxygen for example, is highly soluble in the liquid, and gas is exchanged between the blood system and liquid in the alveoli.
  • a breathing gas can simultaneously be supplied to the parts of the lungs (including the entire respiratory system, i.e. bronchi and other airways), in order to add fresh oxygen to the liquid and remove carbon dioxide.
  • One such treatment system is described in WO 93/09833.
  • One objective of the invention is to achieve a device for use in liquid ventilation systems in order to improve gas exchange between the treatment liquid and the breathing gas.
  • FIG. 1 shows one embodiment of the device in a liquid treatment system connected to a patient.
  • FIG. 1 shows a patient 2 on a treatment couch 4.
  • the patient 2 is connected to a liquid apparatus 6 by a liquid tube 8.
  • the liquid apparatus 6 contains a treatment liquid, such as a solution of perfluorocarbon, which can be delivered to the patient's 2 lungs via the liquid tube 8.
  • the patient's 2 lungs can accordingly be wholly or partially filled with the treatment liquid.
  • a ventilator 10 equipped with a breathing gas generator 12, is also connected to the patient 2.
  • a breathing gas can be fed to and evacuated from the patient 2 via an inspiratory tube 14 and an expiratory tube 16.
  • the inspiratory tube 14 and expiratory tube 16 are connected to a patient tube 18, usually a tracheal tube.
  • the breathing gas reaches the parts of the lung which are not filled with liquid.
  • Gas transport would be very slow if diffusion were the only mechanism for the transportation of gases in treatment liquid.
  • a plurality of embodiments of a device for accelerating or improving gas exchange are described below.
  • a first embodiment of the device is achieved when the breathing gas generator 12 is devised to generate at least two breathing gas frequencies.
  • One frequency is selected to maximize gas exchange in the breathing gas. This causes the rapid removal of carbon dioxide and rapid delivery of oxygen at the interface between the treatment liquid and breathing gas. In this way, a maximum difference in partial pressures is maintained between the two gases in the treatment liquid and breathing gas respectively. A big difference in partial pressure increases diffusion.
  • the second frequency is selected to make the treatment liquid oscillate at an appropriate frequency. The transport of gas in the treatment liquid will then increase.
  • the two frequencies can either be generated as superimposed frequencies for simultaneous action on the breathing gas and treatment liquid or be generated as alternating frequencies for sequential action on the breathing gas and treatment liquid.
  • a plurality of frequencies can also be used to increase the effect of gas exchange.
  • a vibrator unit 22 is placed at an appropriate position on the patient's 2 chest.
  • the vibrator unit 22 is regulated by a control unit 24 connected to the liquid treatment system via the ventilator 10. Vibrations from the vibrator unit 22 are transmitted to the treatment liquid in the lungs and cause it to oscillate. This accordingly creates a stirring effect which accelerates gas transport in the treatment liquid.
  • a magnetic field generator 26 is placed under the patient 2.
  • the magnetic field generator 26 generates a varying magnetic field across the patient's 2 lungs.
  • the treatment liquid contains, or can be supplied with, conductive components which are acted on by the magnetic field and cause a stirring effect in the treatment liquid.
  • Both the second and third embodiments of the device can be used with the first embodiment, i.e. with utilization of a plurality of frequencies in the generation of the breathing gas.

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)
  • External Artificial Organs (AREA)
EP97118282A 1996-12-20 1997-10-21 Device intended for use in a therapeutic system for respiratory care with a liquid Expired - Lifetime EP0848961B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9604724 1996-12-20
SE9604724A SE507617C2 (sv) 1996-12-20 1996-12-20 Anordning avsedd att användas vid ett behandlingssystem för respiratorvård med vätska

Publications (2)

Publication Number Publication Date
EP0848961A1 EP0848961A1 (en) 1998-06-24
EP0848961B1 true EP0848961B1 (en) 2003-02-26

Family

ID=20405083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118282A Expired - Lifetime EP0848961B1 (en) 1996-12-20 1997-10-21 Device intended for use in a therapeutic system for respiratory care with a liquid

Country Status (5)

Country Link
US (1) US6112744A (sv)
EP (1) EP0848961B1 (sv)
JP (1) JPH10179741A (sv)
DE (1) DE69719300T2 (sv)
SE (1) SE507617C2 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU173232U1 (ru) * 2016-10-13 2017-08-17 Общество с ограниченной ответственностью Фирма "Тритон-ЭлектроникС" Генератор потока дыхательной смеси

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2124260T3 (es) * 1991-05-03 1999-02-01 Alliance Pharma Respiracion liquida parcial de fluorocarbonos.
CN100402103C (zh) * 2003-05-22 2008-07-16 重庆海扶(Hifu)技术有限公司 排液通气呼吸系统
US7909031B2 (en) * 2005-06-09 2011-03-22 Temple Univesity - Of The Commonwealth System of Higher Education Process for transient and steady state delivery of biological agents to the lung via breathable liquids
WO2009149355A1 (en) 2008-06-06 2009-12-10 Nellcor Puritan Bennett Llc Systems and methods for monitoring and displaying respiratory information
US8714154B2 (en) 2011-03-30 2014-05-06 Covidien Lp Systems and methods for automatic adjustment of ventilator settings
US9993604B2 (en) 2012-04-27 2018-06-12 Covidien Lp Methods and systems for an optimized proportional assist ventilation
US10362967B2 (en) 2012-07-09 2019-07-30 Covidien Lp Systems and methods for missed breath detection and indication
US9027552B2 (en) 2012-07-31 2015-05-12 Covidien Lp Ventilator-initiated prompt or setting regarding detection of asynchrony during ventilation
US9808591B2 (en) 2014-08-15 2017-11-07 Covidien Lp Methods and systems for breath delivery synchronization
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
US11247015B2 (en) 2015-03-24 2022-02-15 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
US10245406B2 (en) 2015-03-24 2019-04-02 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
EP3297712B1 (en) 2015-05-19 2021-12-15 Kaczka, David Systems for multi-frequency oscillatory ventilation
US10773049B2 (en) 2016-06-21 2020-09-15 Ventec Life Systems, Inc. Cough-assist systems with humidifier bypass
WO2019221852A1 (en) 2018-05-13 2019-11-21 Ahmad Samir Saleh Portable medical ventilator system using portable oxygen concentrators
CN112118884A (zh) 2018-05-14 2020-12-22 柯惠有限合伙公司 用于利用信号失真的呼吸努力检测的系统和方法
US11752287B2 (en) 2018-10-03 2023-09-12 Covidien Lp Systems and methods for automatic cycling or cycling detection
US11324954B2 (en) 2019-06-28 2022-05-10 Covidien Lp Achieving smooth breathing by modified bilateral phrenic nerve pacing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU650845B2 (en) * 1989-08-28 1994-07-07 K. Michael Sekins Lung cancer hyperthermia via ultrasound and/or convection with perfluorocarbon liquids
US5562608A (en) * 1989-08-28 1996-10-08 Biopulmonics, Inc. Apparatus for pulmonary delivery of drugs with simultaneous liquid lavage and ventilation
US5029580A (en) * 1990-07-18 1991-07-09 Ballard Medical Products Medical aspirating apparatus with multi-lumen catheter tube and methods
US5437272A (en) * 1991-05-01 1995-08-01 Alliance Pharmaceutical Corp. Perfluorocarbon associated gas exchange
US5546608A (en) * 1991-05-17 1996-08-20 Russano; Jama K. Undergarment
EP0808636A1 (en) * 1991-11-14 1997-11-26 Alliance Pharmaceutical Corporation Method for partial liquid ventilation using fluorocarbons
US5307794A (en) * 1992-04-01 1994-05-03 Sensormedics Corporation Oscillating ventilator apparatus and method and patient isolation apparatus
US5470885A (en) * 1993-09-29 1995-11-28 The Research Foundation Of The State University Of New York Fluorocarbons as anti-inflammatory agents
US5590651A (en) * 1995-01-17 1997-01-07 Temple University - Of The Commonwealth System Of Higher Education Breathable liquid elimination analysis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU173232U1 (ru) * 2016-10-13 2017-08-17 Общество с ограниченной ответственностью Фирма "Тритон-ЭлектроникС" Генератор потока дыхательной смеси

Also Published As

Publication number Publication date
US6112744A (en) 2000-09-05
SE9604724D0 (sv) 1996-12-20
SE9604724L (sv) 1998-06-21
SE507617C2 (sv) 1998-06-29
DE69719300D1 (de) 2003-04-03
DE69719300T2 (de) 2004-01-29
EP0848961A1 (en) 1998-06-24
JPH10179741A (ja) 1998-07-07

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